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Heating and Cooling› Thermostats, Housings and Fillers

Motorcraft

Thermostat Assembly

$27.56 $7.99 Save $19.57

SKU: RT-1139

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Motorcraft RT-1139 is a thermostat assembly designed for automotive applications. It is manufactured by Ford and is built to OE specifications for reliable fit and function. This part is known for its quality and longevity, adhering to rigorous Ford standards.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMotorcraft
Part NumberRT-1139
CategoryHeating and Cooling

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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